Air-purifier.



H. 1. HERT.

Am PURlFlER.

APPLICATION FILED MAR. I6, 1914.

/NVE/VT? HENRY JT HERT.

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A TTOHNEY HENRY J'. HEBT, OF INDIANAPOLIS, INDIANA.

'AIR-PUBIFIEB..

Specification of Letters Patent.

Patented May 9, 1916.

Application filed March 16, 1914. Serial N o. 825,147.

T o all ywhom it may concern:

Be it known that I, HENRY J. HEBT, a citizen of the United States, and aresident of Indianapolis, county of Marion, and State Aof Indiana, haveinvented a certain new and useful Air-Purifier; and I do hereby declarethat the following is a full, clear, and exact description thereof,reference being had t0 the accompanying drawings, in which like lettersrefer to like parts The object of this invention is the preventionv ofoil, lubricating matter or other foreign substance from leaving an airpump.

The invention is made with particular reference for use in pumping airinto pneumatic tires for vehicle wheels. If oil enters the pneumatictire, it will injure the rubber.

One feature of the invention consists in providing a separator integralwith the pump or pump cap so as to make a single unit. l

Another feature of the invention is the provision of a relief valve inthe lower part of the separator so.. as to get advantage of gravity incarrying out the oil and other foreign substance. Along with theforegoing is the yielding mounting of such relief valve so that when thepneumatic tire is pumped to a sufficient pressure, there will be a bigpressure of the air which will automatically open the relief valve andnot only relieve the pneumatic tire from further air admission7 but willcleanse the separator or remove from it the accumulated oi] as the samewill be blown out through the relief valve. v

The full nature of the invention will be understood from theaccompanying drawings and the following description and claims.

In the drawings, Figure l is a central "ertical section through anairpump and separator, showing the parts in normal working condition.Fig. 2 shows the lower part of the separator with the relief valve open.n In the drawings there is shown an air pump having av cylinder 10,crank case 11, crank. shaft 12, piston rod 13, piston 14 and cylindercap 15. A separator or lter chamber 16 is secured to the pump cap l15,integral or otherwise, and a conduit 17 leads to the lter chamber 16from a valve closed port 18 from the separator. Said port is closed by aball valve 19 spring pressed by a spring 20 and the tension of thespring is controlled by a nut 21.

The filter chamber 16 is closed at its upper end and open and internallythreaded at its lower end to receive a shouldered valve case 22 whichscrews into the lower part of the separator for considerable distance soas to forma chamber 23 covered over by a wire fabric or sieve 24 set ina groove in chamber 16 above said valve case, and the main body of thefilter chamber 16 may be filled with filtering material 25. The aircoming from the pump through passage 17 enters the upper end of theseparator 16 and moves through the filtering material 25 and the wiresieve 24 to the chamber 23 and thence the air passes through apassageway 27 in the wall of the separator to a nozzle 28 on which arubber tube, not shown, may be secured for conveying the air to thepneumatic tire or other place desired` There is a port 30 in the bottomof the chamber 23 through which the oil and other substances which comedown from the filtering material may escape from chamber 23. This port30 is normally closed by a ball valve 31 which is held upward againstits seat by a spring 32 upon a plug 33 which screws into the lower endof the valve case 22, and said plug 33 has an outlet conduit 34 throughit. when the air being supplied to the pneumatic tire, attains asuflicient degree of compression so that the air pressure in the chamber23 willrovercome the force of the spring 32 and open the valve 31, .thefurther incoming air will force the oil and other liquids down throughthe port 30 and conduit 31. This action of the air will remove the oilwhich has accumulated in the lower part of the chamber 23 and it willalso carry oil out of the filtering material down through chamber 23 andthrough the outlet referred to. Hence, the separator is well cleaned,and the cleanin occurs during the short period after the va ve 31 hasbeen opened by the back or excessive pressure of air upon the valve 31.When this valve opens, it makes suflicient noise to be heard and thenthe operator will know that the air in the tire is under sullicientpressure and will detach the device from the tire. The spring 32 can beadjusted to any desired tension by nut or plug 33,-so that valve 31 willopen at the proper time.

Therefore,V

The invention claimed is:

1. In an air purifier, the combination of av separating chamber with anoutlet opening for the separated material at the lower end thereof,means for producing a blast of air under pressure through said chamber,means within said chamber for separating the solids from the air as itpasses therethrough, and a yieldingly mounted valve below 'said chamberfor controlling the outlet opening, whereby said valve operates tocontrol the extent of the pressure within such chamber and the outflowof the separated material from the chamber.

2. In an air purifier, the combination of a separating chamber withvairinlet and outlet openings and an opening for the separated materialbelow said air outlet opening, means for producing a blast of air underpressure through said chamber, means within said chamber for.sepa-rating the foreign material from the air as it passestherethrough, and a yieldingly mounted valve below said chamber forcontrolling the opening for the separated material,

whereby said valve operates to control the extent of the pressure withinsuch chamber and' the outflow of the separated material from thechamber.

3. In an vair purifier, the combination of a vertically disposedseparating chamber with an air inlet near its upper end and an airoutlet above its lower end and an outlet for the separated materialthrough the lower-end thereof, means for producing a blast of air underpressure through said chamber, means within said chamber for Separatingthe foreign material from the air as it passes therethrough, and ayieldingly mounted valve below said chamber for controlling the outletopening, whereby said valve operates to control the extent of thepressure within such chamber and the outflow of the separated materialfrom the chamber.

4. In an air purifier, the combination of a conduit, means for producinga flow of air under ,pressure therethrough, a separating chamber in saidconduit having inlet and outlet openings in its walls communicating withthe conduit, said separating chamber having a settling chamber formedtherein with a third opening at the base of the settling chamber, and ayieldingly mounted valve adapted to normally close lsaid lastmentionedopening, whereby said valve operates the control of the extent ofpressure within said conduit and the outflow of the separated materialfrom said settling chamber.

5. In an air purifier, the combination of a separating chamber with anoutlet open- -chamber for controlling the outlet opening,

whereby said valve operates to control the extent of the pressure withinsuch chamber and the outflow of the separated material from the chamber.

6. In an air purifier, the combination of a separating chamber with airinlet and outlet openings and an opening for the separated materialbelow said air outlet opening, said chamber being adapted to permit thepassage of a blast of air under pressure therethrough, means within saidchamber for separating the foreign material from the air as it passestherethrough, and a yieldingly mounted valve below said chamber forcontrolling the opening for the separated material whereby said valveoperates to control the extent of the pressure within said chamber andthe outflow of the separated material from the chamber.

7. In an air purifier, the combination of a conduit, a separatingchamber in said conduit having inlet and outlet openings in its `wallscommunicating with the conduit, said chamber being adapted to permit thepassage of a blast of air under pressure therethrough, said separatingchamber having a settling chamber formed therein with a third opening atthe base of the settling chamber, and a yieldingly mounted valve adaptedto normally close said last-mentioned opening, whereby said valveoperates the control of the extent of pressure within said conduit andthe outflow of the separated material from said settling chamber.

In witness whereof, I have hereunto affixed my signature in the presenceof the witnesses herein named.

HENRY J. HEBT.

Witnesses:

J. H. WELLS, O. M. MCLAUGHLIN.

